Home / 645,732.54-891,110.79-359,252.55

Finding the Fourth Proportional to 645,732.54, 891,110.79 and 359,252.55

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Solution

The fourth proportional to 645,732.54, 891,110.79 and 359,252.55 is: 495,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,732.54 : 891,110.79 = 359,252.55 : x
  2. Step 2: Convert to fraction form
    645,732.54/891,110.79 = 359,252.55/x
  3. Step 3: Cross multiply
    645,732.54x = 891,110.79 × 359,252.55
  4. Step 4: Simplify right side
    645,732.54x = 320,133,823,640.02
  5. Step 5: Solve for x
    x = 320,133,823,640.02/645,732.54
  6. Step 6: Final answer
    x = 495,768.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.